Alloy.



UNITED STATES PATENT OFFICE.

EDWARD D. GLEASON, OF NEW YORK,'N. Y., ASSIGNOR TO NEW-METALS ANDPROCESS COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

ALLOY.

To all whom it may concern:

Be it known that I, EDWARD D. GLEASON, of Brooklyn, in the county ofKings, city and State of New York, have invented a certain new anduseful Improvement in Alloys, whereof the following is a specification.

My invention relates to the purifying and casting of copper and alloysthereof; the object of my invention being to eliminate oxygen and othergases which if allowed to remain render such castings porous.

This is a division of my application Serial 731,863, filed November 16,1912, which is limited to the process herein contemplated.

In practising my invention I incorporate boron in copper as graphiteexists in cast iron, by fusing them in a crucible, free from impurities,with a flux consisting of native calcium fluorid and fused boracic acid.For instance, in a crucible of magnesite, or graphite free from arsenicballs; I put three 'parts of calcium fluorid, and, on top of that,

one part of fused vitrified boracic acid. I then fuse the same,preferably in an oxyhydrogen furnace of ordinary commercial type, untilthe fused mass of said two ingredients has reached the proper consistency; which is manifested by dense fumes of boron fiuorid arising fromthe crucible. I then pour into said fused mass molten copper at atemperature of about 2500 degrees F. or higher. Thereupon, the boronfluorid permeates the molten copper and when the latter is cooled theboron exists therein as graphite exists in cast iron.

It may be observed that it is impossible to obtain an equivalent efl'ectby placing calcium fiuorid and fused boracicacid on top of the moltencopper, for, in that case, the mixture of said fluorid and acid simplyacts as a cover to the copper in the form of a sla the specific gravitythereof preventing it rom sinking into the copper. Moreover, saidfluorid and acid are of such nature that they cannot be successfullyshot under the molten copper. However, said materials Specification ofLetters Patent.

Patented Jan. 25, 1916.

Divided and this application Serial No. 3,382.

may be added to the molten copper, so as to react at the bottom thereof,by wrapping them in thin sheet copper and sinking the package in themolten copper.

Before my invention, it was known that pure boron, boron carbid, boronsuboxid, or other boron material capable of being oxidized to form borontrioxid might be added to molten copper to combine with oxygen and othergases in the molten mass, to eliminate such gases, so that copper thustreated would form castings free from blow holes or other defects due tothe occlusion of such gases in such metal. However, boron (or thederivatives thereof above contemplated) if added to molten copper,leaves the same with the slag, so that the residue of metal is destituteof boron material of any kind. On the contrary, it is the primary objectof my invention to provide copper retaining boron material throughoutits mass when congealed, so that such boron im pregnated copper may beused in variable proportions in mixture with ordinary copper and othermetals, for instance, in alloys of copper with lead, and with lead andtin, to cause them to mix homogeneously and impart to them differentdegrees of hardness with a given percentage of copper in ac cordancewith the amount of such boron copper included in the mixture, as setforth in my Letters Patent of the United States 1,066,403 and 1,066,428granted July 1, 1913. The attainment of said object, in accordance withmy invention, is dependent upon the occlusion of the boron material inthe molten copper by the injection of the gaseous boron fluorid into thecopper so as to be homogeneously distributed throughout the massthereof. Therefore, I do not desire to limit myself to the precisemethods of procedure or proportions herein set forth, as it is obviousthat various modifications may be made therein without departing from myinvention as defined in the appended claims. However, I disclaim anyproduct of the method or process described in Letters Patent of theUnited States #1,023,604 granted to Ezechiel Weintraub, April 16, 1912,as assignor to General Electric Company.

I claim 5 1. Copper containing boron material in excess of a trace.

2. Copper containing boron material occluded throughout its mass inexcess of a trace.

10 3. A composition containing approximately 99% copper and boronmaterial in substantial excess of a trace.

In testimony whereof, I have hereunto signed m name at Brooklyn, NewYork, this twel th day of January, 1915.

EDWARD D. GLEASON.

Witnesses:

HENRY J. MEYER, WM. BEKOWSKI.

eluded throughout its mass in excess of a trace. I 3. A composltloncontaimng approxi- January 25, 1916, upon the application of Edward 'D.Gleason, of New York, N. Y.

mately 99% copper and boron material in substantial excess of a trace.

EDWARD D. GLEASON.

Witnesses:

HENRY J. MEYER, WM. Bnnowsm.

It is hereby certified that the assignee in Letters Patent No.1,169,536, granted for an improvement in Alloys, was erroneouslydescribed and specified as New-Metals and Process Company, Whereas saidassignee should have been described and specified as NeueMetalsondProcess Company, as shown by the records of assignments in this Oflice;and that the said Letters Patent should be read with this correctiontherein that the same may conform to the record of the Correction inLetters Patent No. 1,169,536.-

case in the Patent Ofiice.

[SEAL] Signed and sealed this 8th day of February, A D., 1916.

R. F. WHITEHEAD,

Acting Commissioner of Patents.

It is hereby certified that the assignee in Letters Patent No.1,169,536, granted January 25, 1916, upon the application of Edward D.Gleason, of New York, N. Y.,

l i for an improvement in Alloys," was erroneously described andspecified as I l New-Metals and Process Company, whereas said essigneeshould have been 1 described and specified as Neu-Metals and ProcessCompany, as shown by the 'gnments in this Office; and that the saidLetters Patent should be read with this correction therein that the samemay conform to the record of the case in the Patent Ofiice.

Signed and sealed this 8th day of February, A D., 1916.

R. F. WHITEHEAD,

Acting Commissioner of Patents.

